<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" 
      v-model="title" @keyup.enter="add"/>
  </div>
</template>

<script setup lang="ts">
import { ref } from 'vue';
  // defineProps返回的是包含指定属性/方法的对象
  const props = defineProps<{
    addTodo: (title: string) => void
  }>()

  const title = ref('')

  const add = () => {
    if (!title.value) return
    props.addTodo(title.value)
    title.value = ''
  }
</script>

<style scoped>
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}

</style>
